解分式方程:-八年级数学

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• 方程的解是（）A．1B．2C．D．－2-八年级数学
• 给出下列说法：①分式方程28-x=0无解；②方程|x|x2+1=0无解；③方程x+1x+1=1x+1-1的解是x=-1；④x-2x2-4=0的解是x=2．其中，正确说法的个数为（）A．1B．2C．3D
• — Many people are in great need of extra food.— Yes. It is a challenge to________all their needs. [
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• Simon was _____ why many of his friends didn’t turn up at his birthday party. A．limitedB．crashed C．s
• When the applause ______, Obama continued his speech.A．died offB．died downC．died outD．died of-高二英语
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• 解方程：3x-2=2+x2-x．-数学
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• He ______ his friend the moment he got the good news. A contacted with B contacted C kept in contact
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• 解下列分式方程：（1）1x2-1+2x+1=0（2）x2x-5+55-2x=1-数学
• ．解方程：（5分）-八年级数学
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• 若，则分式的值是▲．-八年级数学
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• （本题6分）解分式方程．-七年级数学
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• 解方程：（4+4=8分）小题1:（1）小题2:（2）—=8-八年级数学
• ．-七年级数学
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• 计算或解方程：（1）计算：8a-2b2•（2a2b-2）-3（2）计算：(13-12)×|-6|+(12)-2-(π-3)0（3）解方程：2x-1=4x2-1．-数学
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• When the thief found the police had already him ,he ran away quickly.A．knownB．staredC．realizedD．spot
• 为迎接2011年“大运会”的到来，我市对20千米长的北环大道进行了改造，为了尽量减少施工对交通的影响，实际施工时平均每天比原计划多改造100米，结果提前10天完成改造工程，若-七年级数学
• The nurse a bandage to the soldier's wound.[ ]A. usedB. putC. appliedD. laid-高二英语
• （8分）某个体商贩在一次买卖中同时买进两件上衣，每件都以a元出售，若按成本计算，一件盈利25%，另一件亏本25%，那么该商贩在这次买卖过程中是赚了还是赔本了？赚或赔多少？-七年级数学